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HD 2001 (Dil)


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관련 글

CCD photometry and astrometry for visual double and multiple stars of the HIPPARCOS catalogue III. CCD photometry and differential astrometry for 253 southern ``intermediate'' systems
We present new astrometric and photometric data for 253 visual doublestars of the ``intermediate'' class, i.e. with angular separations inthe range 1 to 15 arcsec. The multi-colour observations were obtained in1992-94 as part of the ESO Key Programme ``Visual Double Stars''performed at La Silla Observatory (Chile). Differential magnitudes andcolours have been secured in a systematic way while component magnitudesand colour indices have been determined in the V and I passbands of theCousins standard system in good photometric conditions only. Internaland mean external errors are smaller than respectively 0.01 mag and afew hundreths of a magnitude (typically less than 0.03 mag). Relativepositions are obtained as a by-product with internal errors of the orderof 0.006 arcsec in angular separation (corresponding to pixel width x0.02) and 0.07 degr in position angle. Final accuracies are thoroughlydiscussed: we illustrate the overall excellent quality of the data andestimate the quality degradation for angular separations barely largerthan the width of the seeing disk. Based on observations made at LaSilla (ESO, Chile, Key Programme 7-009-49K).

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관측 및 측정 데이터

별자리:큰부리새자리
적경:00h23m41.43s
적위:-67°42'49.7"
가시등급:9.138
적경상의 고유운동:-3.1
적위상의 고유운동:2.4
B-T magnitude:10.947
V-T magnitude:9.288

천체목록:
일반명Dil
  (Edit)
HD 1989HD 2001
TYCHO-2 2000TYC 9134-1436-1
USNO-A2.0USNO-A2 0150-00145223
HIPHIP 1876

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